Securities - Additional Information (Detail) - USD ($) |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Mar. 31, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
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| Schedule of Available-for-sale Securities [Line Items] | ||||||
| Investments pledged, carrying value | $ 255,600,000 | $ 255,600,000 | $ 238,200,000 | |||
| Other securities | 10,681,000 | 10,681,000 | 13,032,000 | |||
| Sales | $ 5,400,000 | 5,354,000 | $ 1,374,000 | |||
| Gross losses | 0 | $ 347,000 | $ 0 | 347,000 | 0 | |
| Gross gains or losses | 0 | $ 0 | (347,000) | $ 0 | ||
| Federal Home Loan Bank of Cincinnati and Indianapolis Stock [Member] | ||||||
| Schedule of Available-for-sale Securities [Line Items] | ||||||
| Other securities | 10,700,000 | 10,700,000 | 13,000,000 | |||
| Federal Reserve's Bank Term Funding Program [Member] | ||||||
| Schedule of Available-for-sale Securities [Line Items] | ||||||
| Investments pledged, carrying value | $ 25,100,000 | $ 25,100,000 | $ 28,300,000 | |||
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- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Includes other investments and securities that are not at fair value as of the balance sheet date and those that are not accounted for under the equity method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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